Compare 639620 vs 639631
| Property | 639620 | 639631 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 22 × 51 × 319811 | 6396311 |
| Prime factorization | 2 × 2 × 5 × 31981 | 639631 |
| Divisors count | 12 | 2 |
| Divisors | 1, 2, 4, 5, 10, 20, 31981, 63962, 127924, 159905, 319810, 639620 | 1, 639631 |
| Number of properties | 0 | 3 |
| Isolated primes | 40792nd | |
| Primes | 52047th | |
| Sexy primes (1st member) | 11279th | |
| Roman numberals | ||
| Base 2 | 100111000010100001002 | 100111000010100011112 |
| Base 3 | 10121111011223 | 10121111020013 |
| Base 4 | 21300220104 | 21300220334 |
| Base 5 | 1304314405 | 1304320115 |
| Base 6 | 214131126 | 214131316 |
| Base 7 | 53025327 | 53025467 |
| Base 8 | 23412048 | 23412178 |
| Base 9 | 11743489 | 11743619 |
| Base 10 | 63962010 | 63963110 |
| Base 11 | 3a761311 | 3a762311 |
| Base 12 | 26a19812 | 26a1a712 |
| Base 13 | 19519713 | 1951a513 |
| Base 14 | 12915214 | 12915d14 |
| Base 15 | c97b515 | c97c115 |
| Base 16 | 9c28416 | 9c28f16 |